Hoffman VA0916012 Use and care manual

Pentair Equipment Protection
2100 Hoffman Way
Minneapolis, MN 55303 USA
1.763.422.2211
hoffmanonline.com
OperatiOn & Safety
inStructiOnS
Please read all instructions BEFORE
attempting to use this product
IMPORTANT
taBLe 2: Determining cOmpreSSeD air Line Size
1. Calculate total product compressed air consumption (SCFM, SLPM).
2. Determine length of compressed air line required for connection to main supply.
3. Locate pipe length in left column and read to the right to nd the compressed air requirements.
4. Locate pipe size at top of column.
fiLter anD repLacement part item numBerS
Hoffman Model # Oil Removal Filter Replacement Generator Kits (5 pc)
VA0916012 VC-OF17 VAGK09
VA1516012 VC-OF17 VAGK15
VA2516012 VC-OF25 VAGK25
taBLe 1: fiLter recOmmenDatiOnS
VOrteX a/c encLOSure cOOLer
uL type 12
Models VA0916012, VA1516012, VA2516012
LIT0280M
Rubber hose maximum airow rating: 1/2” I.D. rubber hose = 3/8” pipe; 3/4” I.D. rubber hose = 1/2” pipe
89103849 Rev. A
maXimum airfLOw (Scfm) thrOugh pipe at 5 pSig preSSure DrOp (100 pSig anD 70Of)
Pipe Length
(Feet)
Pipe Size (Nominal) - Schedule 40
1/4 3/8 1/2 3/4 1 1-1/4 1-1/2 2 2-1/2
10 29 65 120 254 480 978 1483 2863 4536
20 21 46 85 180 340 692 1049 2024 3208
30 17 37 70 147 277 565 856 1653 2619
40 15 32 60 127 240 489 792 1431 2268
50 13 29 54 114 215 437 663 1280 2029
60 12 26 49 104 196 399 606 1169 1852
70 11 25 46 96 181 370 561 1082 1715
80 10 23 43 90 170 346 524 1012 1604
90 10 22 40 85 160 326 494 954 1512
100 9 21 38 80 152 309 469 905 1435
maXimum airfLOw (SLpm) thrOugh pipe at 0.3 Bar preSSure DrOp (6.9 Bar anD 21Oc)
Pipe Length
(Meters)
Pipe Size (Nominal) - Schedule 40
1/4 3/8 1/2 3/4 1 1-1/4 1-1/2 2 2-1/2
3 821 1840 3396 7188 13584 27677 42117 81023 128369
6 594 1302 2406 5094 9622 19584 29687 57279 90786
9 481 1047 1981 4160 7839 15990 24225 46780 74188
12 425 906 1698 3594 6792 13839 20999 40497 64184
15 368 821 1528 3226 6085 12367 18763 36224 57421
18 340 736 1387 2943 5547 11292 17150 33083 52412
21 311 708 1302 2717 5122 10471 15877 30621 48535
24 283 651 1217 2547 4811 9792 14829 28640 45393
27 269 623 1132 2406 4528 9226 13980 26998 42790
31 255 594 1075 2264 4302 8745 13273 25612 40611

intrODuctiOn
A Vortex A/C enclosure cooler is designed to use ltered
compressed air to cool industrial control cabinets without the
use of any refrigerants. Hot air in the cabinet is vented to the
surroundings through a built-in vent in the Vortex A/C. Noise
generated by the Vortex A/C is comparable to normal speech
levels. The Vortex A/C has a built-in mechanical thermostat that
requires no electricity. To operate, simply install on your enclosure
and connect the compressed air source.
cOmpreSSeD air SuppLy
The compressed air supply must be ltered (5 micron maximum)
to remove water and dirt. A 5 micron lter is supplied for this
purpose (Hoffman model VAAF15 or VAAF25). If oil is present in
the compressed air supply, remove the oil using an optional 0.01
micron coalescing lter (Hoffman model VC-OF17 or VC-OF25).
Filter recommendations are given in Table 1.
If an oil removal lter is necessary, install it downstream of
the 5 micron lter. Change the lter elements as needed (see
Maintenance).
The appropriate size of compressed air supply line should be
selected to ensure optimal performance of the Hoffman product.
Please refer to Table 2 to determine what supply line size is
recommended for your application. Contact Pentair Equipment
Protection for assistance, phone #[phone].
internaL caBinet preSSure
The Vortex A/C, when operating at 100 psig (6.9 bar), will maintain
the internal enclosure pressure at approximately 35” (889 mm)
of water column. When the Vortex A/C is not cooling (when the
thermostat senses acceptable temperatures), the Vortex A/C is
not pressuring the enclosure. If you desire a constant positive
internal enclosure pressure, even when the Vortex A/C is not
cooling, this may be accomplished by removing a set screw
that is adjacent to the mechanical thermostat on the bottom of
the unit. By removing this set screw with a 3/32” (2 mm) hex
key), a small amount of air (3 cfm or 85 lpm) will pressurize the
sealed enclosure to approximately 1.5” (38 mm) water column.
This “pressurization air” will run continuously, regardless of the
thermostat operation, until the set screw is re-installed.
maintenance
The only maintenance involved with the Vortex A/C is normal
element changes to the compressed air lter. The lter element
should be changed when there is a noticeable decrease in
performance or when pressure drop across the lter exceeds
5 psig (0.3 bar). The Vortex A/C has only one moving part (the
mechanical thermostat/valve) which is not serviceable in the
eld. Do not disturb the setting of the thermostat. Evidence of
tampering with the thermostat may void the warranty.
If it is suspected that the compressed air lter has not been
maintained after an extended period of operation, there may be
dirt in the Vortex A/C. If the Vortex A/C is not cooling sufficiently,
there may be debris in the “generator” of the unit. To check, pull
the 1/2” (13 mm) inside diameter vinyl tubing off the cold air
outlet of the Vortex A/C and unscrew (with a 1” (25 mm) open
end wrench) the cold air outlet. Remove the O-ring. Remove the
white nylon washer(s). Then remove the red (model VA0916012)
or the blue (model VA1516012) or the brown (model VA2516012)
generator. Inspect the six slots in the generator for dirt and
clean if necessary. Clean the cavity in the Vortex A/C that the
generator was located in if necessary. Reassemble in reverse
order. Tighten the cold air outlet to 100 inch-pounds (11 newton
meters) torque. Be sure to supply clean (ltered to 5 micron) and
oil free compressed air to the Vortex A/C.
inStaLLatiOn
To maintain the UL Type 12 rating, the Vortex A/C MUST be
installed in one of the following congurations on a UL Type 12
enclosure:
a. Top mounted in an upright and vertical orientation, on
a at horizontal surface (as shown)
b. Side mounted, on a at vertical surface of the
enclosure, with the compressed air inlet pointing
upward. When side mounted, rotate the aluminum
louvered outlet on the back of the Vortex A/C so the
louvers point downward to the oor.
1. Position the Vortex A/C on the top or side of your enclosure
so that there is sufficient clearance for the internal mechanical
thermostat and cold air outlet, and, so that the entire mounting
“footprint” of the Vortex A/C is supported by the enclosure. (A
4-3/4” wide x 3-3/8” deep (121 mm wide x 86 mm deep) area).
Position the unit so that the louvered outlet on the back of the
Vortex A/C is away from personnel, if possible. Also, position
so that no internal enclosure components obstruct air ow
around the mechanical thermostat.
2. Cut a 1-15/16” (49 mm) diameter hole (1-1/2” knockout size)
in the selected location on the enclosure. De-burr any sharp
edges around this hole.
3. Remove the 1-1/2” electrical locknut from the Vortex A/C.
Insert the threaded portion of the Vortex A/C into the 1-15/16”
(49 mm) hole in the enclosure. (Be careful not to damage the
mechanical thermostat during installation.)
4. From inside the enclosure, screw the electrical locknut onto
the threads of the Vortex A/C. Tighten the locknut securely
to compress the 1/8” (3 mm) thick sealing gasket that is
positioned between the enclosure and the Vortex A/C.
5. Determine a suitable location for the Cold Air Muffler inside the
enclosure that is close to the cold air outlet of the Vortex A/C.
(You will need a surface area of approximately 2” x 9” (50 mm
x 229 mm) to mount the muffler. The Muffler can be mounted
in any orientation, horizontal or vertical.) Using the supplied
Muffler Mounting Clamp (with double sided tape), attach this
Clamp at the desired location. Clean the mounting surfaces
so that the double sided tape bonds securely. If desired, this
Clamp can be permanently mounted to the enclosure using
the supplied mounting hardware. Two 5/32” (4 mm) diameter
holes positioned on 3/4” (19 mm) centers must be drilled to
mount the Muffler Clamp. Use the plastic snap rivets to secure
the Muffler Clamp to the panel.
6. Snap the Cold Air Muffler into the Mounting Clamp.
7. Cut a sufficient length of the 1/2” (13 mm) inside diameter
vinyl tubing from the supplied VADK124X Cold Air Ducting Kit
to connect the cold air outlet of the Vortex A/C to one of the
hose barbs on the Cold Air Muffler. Attach this length of vinyl
tubing so that it is free of sharp bends and kinks. Direction of
cold air ow through the Muffler is not important.
8. Attach all (or a portion of) the remaining supplied vinyl tubing
of the VADK124X Cold Air Ducting Kit to the opposite hose
barb connection on the Cold Air Muffler. Holes can be punched
or drilled into this 1/2” (13 mm) tubing to distribute the cold
air evenly inside your enclosure, or, the entire cold air output
can be directed to a heat sensitive component. If the end of
the 1/2” (13 mm) vinyl tubing is plugged, at least sixteen 1/8”
(3 mm) diameter holes should be punched into the tubing to
allow the cold air to escape. Use the nine self adhesive tubing
clips provided in the kit to mount the tubing.
9. Connect the compressed air lter (model VAAF15 or VAAF25)
to the compressed air inlet on the side of the Vortex A/C with
a short length of 3/8” pipe. Allow the lter to hang at the side
of the enclosure as shown in the installation drawing. Use a
13/16” (21 mm) wrench to hold the air tting on the side of the
Vortex A/C stationary while tightening the pipe connections.
Note the air ow direction arrow on top of the lter.
10. Connect the compressed air supply to the inlet of the air lter.
See “Compressed Air Supply”.
OperatiOn
Operate the Vortex A/C at 90 to 100 psig (6.2 to 6.9 bar)
compressed air pressure. Do not operate at pressures above 150
psig (10.3 bar). Operation at pressures less than 90 psig (6.2
bar) and above 100 psig (6.9 bar) can affect the “on” and “off”
temperatures at which the unit cycles. The Vortex A/C will cycle
on and off to maintain temperatures between 80oto 90oF (27oto
32oC). The Vortex A/C will not work properly at pressures below
70 psig (4.8 bar).
CAUTION: The louvered outlet on the back of the Vortex A/C
becomes hot during operation and can remain hot for a period of
time after the unit has cycled off. Note warning label precaution,
and avoid direct contact with this area of the unit during or after
operation.
trOuBLeShOOting
Insufficient cooling may be caused by the following:
1. Undersized compressed air line size.
2. Compressed air pressure at the product is too low.
3. Partial or complete blockage of internal compressed air paths,
due to dirt.
4. Water vapor in the compressed air supply.
5. Loose cold air outlet tting. This may occur if not tightened
properly after being disassembled for cleaning.
If trouble persists, please contact Pentair Equipment Protection
for assistance, phone #[phone].
LimiteD warranty
Pentair Equipment Protection products will be replaced or
repaired if found to be defective due to manufacture within one
year from the date of invoice. Pentair makes no specic warranty
of merchantability or warrant of tness for a particular purpose.
generaL Safety cOnSiDeratiOnS
1. Do not operate a Vortex A/C at compressed air pressures
above 150 psig (10.3 bar).
2. Do not operate a Vortex A/C at line temperatures above
110 oF (43oC).
3. Avoid direct contact with compressed air.
4. Do not direct compressed air at any person.
5. When using compressed air, wear safety glasses with
side shields.
VORTEX A/C TYPE 12
(SHOWN TOP MOUNTED ON CUSTOMER’S ENCLOSURE)
Hole 1-15/16” (49 mm)
1-3/4” (44 mm) diameter
x 3-19/32” (91 mm) long
muffler and mounting
clamps
Vent Air
Filter
5-7/8”
(149 mm)
Danger: cOmpreSSeD air cOuLD cauSe Death, BLinDneSS
Or injury.